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Biophysics > Pressure And Fluid Pressure SS.3 > Flashcards

Pressure And Fluid Pressure SS.3 Flashcards

1
Q

Density

A

M/v kg/m^3

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2
Q

Water density

A

1000 kg/m^3

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3
Q

Hydrogen density

A

Lowest density

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4
Q

Platinum density

A

Highest density

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5
Q

Relative density

A

The ratio of an object’s density to the density of water, it’s unit less

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6
Q

Hydrometer

A

An instrument to measure relative density of liquids

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7
Q

Solid pressure

A

Magnitude of a force acting on a given area

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8
Q

Evangelista torricelli

A

Developer of first device to measure atmospheric pressure

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9
Q

Barometer

A

A device for measuring atmospheric pressure

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10
Q

Hydrostatics

A

Branch of fluid mechanics that studies fluids at rest

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11
Q

Fluid

A

Is a substance that can flow

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12
Q

Fluid pressure

A

Results from collision of particles

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13
Q

Buoyant force

A

An upward force that is applied by a fluid that opposes the weight of partially or completely submerged object

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14
Q

Buoyancy

A

The ability or tendency to float

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15
Q

Archimede’s principle

A

An object that is completely or partially submerged in a fluid experiences an upward buoyant force that is equal to the weight of the fluid displaced

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16
Q

Pascal’s law

A

An external pressure applied to an enclosed fluid is transmitted uniformly through the volume of the fluid

17
Q

Hydrostatic pressure

A

P=energy/volume

18
Q

Bernoulli principle

A

The faster the non viscous fluid move the less pressure it experts(spend)

19
Q

Brenoulli equation

A

Considered to be a statement of conservation of energy

20
Q

Continuity equation

A

A1V1=A2V2

21
Q

Uniform flow

A

The velocity at a given instant of time is same in both magnitude and direction at all points in the flow

22
Q

Non uniform flow

A

When the velocity changes from point to point in a flow at any given instant of time

23
Q

Converging flow speed

A

Non uniform flow , magnitude changes

24
Q

Vortex flow speed

A

Non uniform flow direction changes

25
Q

Laminar flow

A

A fluid flow in a straight tube with smooth layers maximum speed in the central axis of the tube, silent and minimal loss in pressure and energy

26
Q

Turbulent flow

A

Speeded up flow past a certain point eddies in random direction with varying speeds, producing sound and considerable drop in pressure

27
Q

Viscosity

A

Measure of resistance to fluid flow

Measure of the fluid’s thickness

Biophysics (2 decks)

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